NEWHALL — Valencia High baseball coach Jared Snyder was put on indefinite leave Friday, and a few hours later, the Vikings lost 3-1 at Hart in a Foothill League game.

Snyder, a full-time teacher, also was stripped of his classroom duties, though it’s unclear what he did wrong.

A source said Snyder was disciplined for a post-game incident in a March 13 loss to Thousand Oaks when a Thousand Oaks parent complained Valencia’s players did not shake hands. There were prior disciplinary issues, including at least one incident in which Snyder had to appear before the district board, according to multiple sources.

Snyder did not return a phone call seeking comment.

Valencia outfielder Chad Bible said school principal Paul Priesz informed the players at lunch that Snyder was “under investigation” and would be replaced by assistant Mike Killinger for the rest of the season.

“(The Thousand Oaks incident) was part of it, but there’s more to it,” Bible said.

Valencia (3-4, 0-2) has lost three in a row heading into today’s doubleheader against Dana Hills.

Shortstop Keston Hiura, who doubled and scored Friday, said the Vikings are trying to put the Snyder situation behind them.

“That’s none of our business. As a team we’ve got to work past it and do our jobs,” Hiura said. “I have full faith in our team. There’s a lot of baseball left. I’ve known coach Killinger for four years, and I know he knows baseball. We trust him.”

Mike Killinger, 38, was Snyder’s assistant for the past 11 years.

“I told everyone we’ve got to band together and all get through this together,” Killinger said. “I’m excited for the opportunity. It’s a tough situation, but we’ll pull through as a team, and we’ll get ready to get it done.”

“It’s a sad day for our program,” said K.C. Cunningham, father of Valencia pitcher Jack Cunningham.

Bob Davis, grandfather of Valencia first baseman Devin Davis, said he supports Snyder.

“He’s always been good to us. I have nothing bad to say about him,” he said.

Snyder won eight Foothill League titles over 16 seasons.

“It’s been a crazy day,” Killinger said. “We just heard about it, so we’re all pretty shocked. I don’t have any knowledge of exactly what’s going on because it all happened so quick. I’m sure I’ll (talk to Snyder) later.”